Senior Network Support Engineer
About The Position
Leidos is seeking an experienced Senior Network Support Engineer for the Army Global Unified Network (AGUN) program. The role supports the maintenance, security, and modernization of the U.S. Army’s global enterprise network to help ensure reliable communications and mission readiness worldwide. The engineer provides hands-on network operations, troubleshooting, and engineering support in a complex global environment, using advanced networking technologies to resolve critical incidents, support migrations, and improve network performance and security. The position follows a hybrid schedule of three days onsite at the Global Cyber Center (GCC) and two days remote. It requires an active Secret security clearance and DoD IAT Level II certification (Security+ or equivalent) before starting. The role participates in a 24/7 on-call rotation, including occasional nights, weekends, holidays, and mission-driven surge support.
Requirements
- Bachelor’s degree with at least 8 years of relevant experience, or a master’s degree with at least 6 years of relevant experience; additional applicable experience may be considered in place of a degree.
- Current active Secret security clearance.
- DoD IAT Level II certification (Security+ or higher) required before starting.
- Hands-on experience supporting Cisco SD-WAN environments.
- Knowledge of Software Defined Networking (SDN).
- Experience with VMware virtualization and Red Hat Enterprise Linux (RHEL).
- Experience using InfoVista network performance management tools.
- Experience with at least two of the following: Cisco DNA Center / Prime, Juniper Networks, Palo Alto Networks, Dell Networking, Junos Space, or AppGate.
- Strong understanding of LAN/WAN, BGP, TCP/UDP, IPSec, VPNs, Layer 2/Layer 3 routing, and firewalls.
- Familiarity with SFTP, SSH, SCP, SNMP, and NTP.
- Experience with ITSM ticketing tools and incident management.
- Strong troubleshooting, communication, and teamwork skills.
- Ability to work a hybrid schedule of three days onsite and two days remote, and participate in a 24/7 on-call rotation.
Nice To Haves
- CCNP certification or equivalent.
- Linux shell scripting experience.
- Experience with GitLab, CI/CD pipelines, Jira, and Confluence.
- Knowledge of network automation tools such as Ansible, Terraform, Puppet, Salt, and Git.
- Experience with network monitoring tools such as SNMP, NETMON, and LiveAction.
- Experience with at least two of the following: NetFlow, Elastic, Kafka, Grafana, Prometheus, or Nexus Repository.
- Experience supporting large, geographically dispersed enterprise networks.
- Familiarity with U.S. Army network security requirements and DoD network operations.
Responsibilities
- Support Army global network operations, ensuring availability, performance, and security around the clock.
- Troubleshoot and resolve complex network incidents, outages, and connectivity issues.
- Configure, maintain, and support Cisco SD-WAN and enterprise networking technologies.
- Execute approved network configuration changes, security updates, and remediation activities.
- Manage incident and service request tickets using Jira Service Desk or other ITSM tools.
- Monitor network performance, capacity, and reliability, and recommend improvements.
- Support network migrations, system integrations, cutovers, and modernization initiatives.
- Work with engineering teams and mission partners to identify and resolve network issues.
- Provide timely operational updates to the Global Cyber Center and program leadership.
- Support environments using VMware, Red Hat Enterprise Linux, and InfoVista.
- Participate in a 24/7 on-call rotation, including occasional nights, weekends, holidays, and mission-driven surge support.
- Collaborate with technical teams to improve network stability, security, and operational efficiency.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
